Speech message code modifying arrangement

Details Speech message code modifying arrangement Speech message code modifying arrangement

1984-05-04

1987-11-24

Kemeny, E. S. Matt

Electrical audio signal processing systems and devices

Monitoring/measuring of audio devices

Loudspeaker operation

381 38, G10L 500

Patent

active

047093900

ABSTRACT:
Natural quality and bit-rate for LPC speech synthesis is improved by encoding the LPC residual signal in a prescribed multipulse format formed for each LPC frame. Voiced, unvoiced, and mixed (hiss plus periodic) excitation is inherent. The speaking-rate is changed by adding, deleting, or repeating pitch-periods, and the pitch (intonation) is changed by adding or deleting zeros in the multipulse excitation signal.

REFERENCES:
patent: 3624302 (1971-11-01), Atal
patent: 3631520 (1971-12-01), Atal
patent: 4435831 (1984-03-01), Mozer
patent: 4449190 (1984-05-01), Flanagan et al.
patent: 4472832 (1984-09-01), Atal

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